So at drag week this year I wandered over to the Mickey Thompson tent when I was wandering around waiting for things to happen. I asked them why the 275 Pro was directional, he then proceeded to tell me that it is because the rain grooves are only designed to push water out one direction lol. So I assume they Probably up the safe rain driving speed from 9 mph to 11 over a standard slick.

I really like the radials though, they wear good, they hold the same air pressure for MONTHS and the car drives soooo nice.